Toothbrush head



FIG. 1 is a front perspective view from above and right side;

FIG. 2 is a front view;

FIG. 3 is a back view;

FIG. 4 is a left side view;

FIG. 5 is a right side view;

FIG. 6 is a top view; and,

FIG. 7 is a bottom view.

The broken line showing of a handle illustrates environmental structure that forms no part of the claimed design. 

CLAIM I claim the ornamental design for a toothbrush head, as shown and described. 